FR966272A - Screw and screwdriver - Google Patents

Screw and screwdriver

Info

Publication number
FR966272A
FR966272A FR966272DA FR966272A FR 966272 A FR966272 A FR 966272A FR 966272D A FR966272D A FR 966272DA FR 966272 A FR966272 A FR 966272A
Authority
FR
France
Prior art keywords
screwdriver
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Frederic Levin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR966272A publication Critical patent/FR966272A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0015—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially rectangular, e.g. one-slot head

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR966272D 1948-05-04 1948-05-04 Screw and screwdriver Expired FR966272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR966272T 1948-05-04

Publications (1)

Publication Number Publication Date
FR966272A true FR966272A (en) 1950-10-05

Family

ID=9499830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR966272D Expired FR966272A (en) 1948-05-04 1948-05-04 Screw and screwdriver

Country Status (2)

Country Link
BE (1) BE487492A (en)
FR (1) FR966272A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025140A (en) * 1974-08-02 1977-05-24 Tula Machine Co., Inc. Locking device for the prongs of an electrical plug
EP0143826A1 (en) * 1983-05-06 1985-06-12 John Vaughn Improved high torque fastener and driving tool.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025140A (en) * 1974-08-02 1977-05-24 Tula Machine Co., Inc. Locking device for the prongs of an electrical plug
EP0143826A1 (en) * 1983-05-06 1985-06-12 John Vaughn Improved high torque fastener and driving tool.
EP0143826A4 (en) * 1983-05-06 1985-10-14 John Vaughn Improved high torque fastener and driving tool.

Also Published As

Publication number Publication date
BE487492A (en)

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